Reinforced concrete structure.



PATENTED JUNE 30, 1908.

APPLICATION FILED OGT.17, 1907 UNITED STATES PATENT OFFICE.

GEORGE MJGRA AM, or CHICAGO, ILLINOIS, ASSIGNOR TO e. A. EDWARD KOHLER,or

' CHICAGO, ILLINOIS.

REINFORCED CONCRETE STRUCTURE.

Specification of Letters Patent.

, Application filed October 17, 1907.

Patented June 30, 1908.

Serial No. 397,849.

and State of Illinois, have invented certain,

new and useful Improvements in Reinforced Concrete Structures, of'whichthe following is a specification.

This invention relates to structural iron columns forming parts of theskeleton reinforcing frame of concrete buildings; and the presentimprovement has for its object to provide a simple, light andsubstantial structural arrangement and combination of parts adapted toafford a ready and firm support for the series of tubes which in turnafford support for the reinforcing wire webs of the.

sories in place.

| Similar numerals of reference indicate like parts in the severalviews.

. Referring to the drawings, 1 represents a series of four verticallyarranged structural iron bars of an angle or other suitable shape incross section, and which are held in separated relation by the diagonalbracing bars 2, as usual in built up structural iron columns.

3 are a series of U shaped stirrup pieces arranged between pairs of thecolumn bars 1 and with their vertical portions secured to said bars 1 byrivets as shown. As so arranged, bearin gs having a semi-circularbottom, are horizonta girders 4, which rest in said stirrups as shown,and are held in position by thetransverse bolts 5, which extend throughthe webs of the bars 1, the vertical portions of the stirru s 3 and theaxial portion of the circular gir ers 4, to afford a strong and rigidattachment of the parts.

6 are flanged pieces secured to the column bars 1 immediately beneaththe strirups 3, to rovide additional support for the same under the loador stress imposed thereon in the completed structure.

members resting in said stirrup i rovided for the series of tubular.

7 is the mass of concrete, in which the column constructed as abovedescribed is embedded.

8 is the perforated sheet lathing which holds the concrete in placewhile setting, and to which the finishing outcr coat of concrete or thelike is applied, as usual in the construction of reinforced concretecclun'ms of the present type.

Having thus fully described my said invention what I claim as new anddesire to-secure by Letters Patent, is:

1. In a reinforcing frame for concrete structures, the combination of aseries of vertical structural iron members, braces securing the same inseparated relation, a series of U shaped stirrup pieces secured betweensaid vertical members with their arms extending upwardly, and horizontaltubular frame mem bers resting in said stirrup pieces.

2. In a reinforcing frame for concrete structures, the combination of aseries of vertical structural iron members, braces securing the same inspaced rectangular relation, :1 series of U shaped stirrup pieccssecured between said vertioal members with their arms extendingupwardly, and horizontal tubular frame members resting in said stirruppieces.

3. In a reinforcing frame for C0] crete structures, the combination of ascries'of vertical structural iron members, braces securing the same inspaced rectangular relation, a series of U shaped stirrup pieces securedbetween said vertical members with their arms extending upwardly,horizontal tubular frame transverse bolts passing throug the verticalmembers, stirrup pieces and tubular mem bers to secure the parts inplace.

4. In a reinforcing frame for concrete structures, the combination of aseries of vertical structural iron members, braces securing the same inspaced rectangular relation,

a series of U shaped stirrup pieces secured bctween said verticalmembers with their arms extending upwardly, horizontal tubular framemembers resting in said stirru pieces, and transverse bolts passingthroug 1 the vertical members, stirrup pieces and tubular frame membersto secure the parts in )lace.

5. In a reinforcing frame or concrete structures, the combination of aseries of vertical structural iron members, braces securing the same inseparated relation, a series of U shaped stirrup pieces secured betweensaid pieces, and

vertical members with their arms extending upwardly, flanged iecessecured to said vertical members an located beneath and in contact withsaid stirrup piecesto provide a support therefor, and horizontal tubularframe members resting in said stirrup pieces.

6. In a reinforcing frame for concrete structures, the combination of aseries of vertical structural iron members, braces securing the same inspaced rectangular relation, a series of U shaped stirru pieces securedbetween said vertical mem ers with their arms -'extending'upwardly,flanged pieces secured to said vertical members and located beneath andin contact with said stirrup pieces to provide a support therefor, andhorizontal tubular frame members resting 'insaid stirrup pieces.

7. In a reinforcing frame for concrete structures, the combinat on of aserles of Vertical structural iron members, braces secur-.

ing the same in separated relation, a series of U shaped stirrup piecessecured between said vertical members with their arms extendingupwardly, flanged ieces secured to said vertical members an locatedbeneath and in contact with said stirrup pieces to rovide a supporttherefor, horizontal tubu ar frame members resting in said stirrupieces, and transverse bolts' passing throug the vertical members,stirrup pieces and tubular members to secure the parts in place.

to said vertical members and located beneath and in contact with saidstirrup pieces to provide a sup ort therefor, horizontal tubular framemem ers resting in said stirrup ieces, and transverse bolts passingthrough t e vertical members, stirrup pieces and tubularAE members tosecure the arts in place.

- Sigped at Chicago, I inois this 2nd day of Octo er 1907.

GEORGE M. GRAHAM. Witnesses: I

- ROBERT BURNS,

FRANK S. REID.

